O'Brien, Joseph F. K1LCQ
O'Brien, Norman F. G3LP
O'Bryan, Thomas E. W8WVL
O'Byrne, Michael M. AE4AV
O'Connell, James C. W9WU
O'Connor, John F. KD4WST
O'Donnell, Ione WA2DMK
O'Hara, William V. WA3KYW
O'Hern, James C. AD4XX
O'Kain, Bill K4LTA
O'Keefe, James B. K2KAU
O'Marah, Michael KA7MUL
O'Neil, Julio Volpe EA5XX
Obermann, Mark G. AG9A
Obritski, Stanley L. WB2TTY
Obry, Daniel F6CQU
Occhipinti, John D. K3UR
Ochi, Hideaki JA3HUL
Ockenhouse, Lewis C. W3DCR
Ocker, Charles C. N9CO
Odegard, Glen C. WB9TBT
Odell, Edwin F. W2RWE
Ogilvie, Charles R. WD5GKH
Okada, Seiji JA1ELL
Oku, George W6GRF
Olin, Tom WB2HLY
Olinger, Guy K2AV
Oliva, Jr., George K2UO
Oliver, John A. K6UU
Olivier, Andre F6AFA
Olsen, Irving E. W6HAW
Olson, Gary C. W9YZG
Olson, Kenneth A. W0YXO
Olson, Tod K0TO
Olsson, Eric R. KB1JL
Onishi, Mitsuo JA7CEK
Onoda, Jun JA1SY
Oohira, Toshihiko JA0AFD
Oredson, Hank W0RLI
Orman, Jr., Ernest E. W5OXA
Ornstein, Marc W. WB2YYB
Ortensio, Roberto I1NU
Ortiz, Diane P. K2DO
Ortiz, Julio L. AD6DK
Ortlieb, Michael T. KN9P
Osborn, Marcia K. KW1U
Osborne, Billy S. K4LRL
Osborne, Thomas K. W7WHY
Osowski, Jan SP6AAT
Osterberg, Bruce M. N9BX
Osterberg, Karl O. SM4KL
Ostrom, Stanley R. W6XP
Ostrowski, Richard J. N2NA
Ostroy, Dan K2UL
Otnott, III, Charles H. WD5BJT
Otterstad, Ragnar LA5HE
Otto, Donald F. WD8OCV
Oubre, Al K5DPG
Overbeck, Wayne N6NB
Owen, Elbert L. AK4G
Owens, Benson J. K5KV
Owens, Lawrence T. W4DEC
Owens, William H. KT5Z